EFFECT OF REDUCED BRACE SECTIONS ON THE PUSHOVER CURVE OF CONCENTRICALLY STEEL BRACED FRAMES

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ALIPOUR M.H.; JOWKAR L.

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Paper Information

Journal: STRUCTURE AND STEEL Year:2017 | Volume:14 | Issue:21 Page(s): 5-13

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Information Journal Paper

Title

EFFECT OF REDUCED BRACE SECTIONS ON THE PUSHOVER CURVE OF CONCENTRICALLY STEEL BRACED FRAMES

Author(s)

ALIPOUR M.H. | JOWKAR L. | Issue Writer Certificate

Keywords

REDUCED BRACE SECTIONQ1

FUSEQ1

DUCTILITYQ2

PLASTIC HINGEQ2

BASE SHEARQ1

Abstract

Utilization of reducing brace’s section in concentrically steel braced frame to cope with seismic loads and raising DUCTILITY and its impact on the BASE SHEAR variations is studied in this research. In this study, two types of FUSEs are created by reducing brace’s cross sections. The first FUSE is created by reducing the cross-section of tubox bracing in certain areas. This type of brace has been used in the frames of 3& 7 story buildings with various openings. The second FUSE is created by reducing the cross-section of angles in X bracing steel frames of 2 - 9 story buildings. Therefore, sections are designed such that the tensile capacity of bracing is lower than the capacity of connection. The above tasks were simulated using ETABS & ABAQUS software. Performance of the frames were examined under lateral loads.Results show that the braced frame with reduced sections dissipate applied energy from seismic loads and DUCTILITY of structure is increased. The formation of PLASTIC HINGEs on the FUSEs prevent yielding of connections without the need for retrofitting. Transitional forces to main structural members and BASE SHEAR of structures is decreased with good performance of FUSEs, which is an indication of optimal performance of the system and its preference.

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APA: Copy

ALIPOUR, M.H., & JOWKAR, L.. (2017). EFFECT OF REDUCED BRACE SECTIONS ON THE PUSHOVER CURVE OF CONCENTRICALLY STEEL BRACED FRAMES. STRUCTURE AND STEEL, 14(21 ), 5-13. SID. https://sid.ir/paper/136681/en

Vancouver: Copy

ALIPOUR M.H., JOWKAR L.. EFFECT OF REDUCED BRACE SECTIONS ON THE PUSHOVER CURVE OF CONCENTRICALLY STEEL BRACED FRAMES. STRUCTURE AND STEEL[Internet]. 2017;14(21 ):5-13. Available from: https://sid.ir/paper/136681/en

IEEE: Copy

M.H. ALIPOUR, and L. JOWKAR, “EFFECT OF REDUCED BRACE SECTIONS ON THE PUSHOVER CURVE OF CONCENTRICALLY STEEL BRACED FRAMES,” STRUCTURE AND STEEL, vol. 14, no. 21 , pp. 5–13, 2017, [Online]. Available: https://sid.ir/paper/136681/en

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